Style guides provide writers and non-writers with a manual of rules for writing, formatting and creating documents. They govern consistency and uniformity. Many of us have used a style guide in school, such as APA Style, MLA Style or Chicago Manual of Style, to format and cite sources for a thesis, dissertation or research paper. You may have used a style guide when you composed an article for a journal, magazine or website. Some of us who copy edit or proofread for publishers use either a common style guide or the publisher's in-house style to ensure all written materials are consistent in substance and structure.
